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Pronunciation: his'ton

Definition: One of a number of simple proteins (often found in the cell nucleus); contains a high proportion of basic amino acids; soluble in water, dilute acids, and alkalies; and not coagulable by heat; the proteins associated with nucleic acids in the nuclei of plant and animal tissues. They constitute about half the mass of the chromosomes of eukaryotic cells.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.